[$65] Challenge Listings/Details page loads a blank page

[SathyaJayabal]

https://test-community-app.topcoder-dev.com/challenges
loads a blank page in test env.

[SathyaJayabal]

Also happening on the challenge details page

[SathyaJayabal]

cc @sushilshinde @lakshmiathreya

[sushilshinde]

This probably because the api payload is changed.

This is urgent issue. Please PR in 2 hours.